Coolant, draining and refilling: Draining

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Drained coolant must be stored in a clean container for disposal or reuse.

WARNING:

Cover cap of expansion tank with rag and open carefully, as hot steam i.e. hot coolant may escape when opening.

Open cap of coolant expansion tank.

Fig 1: Identifying Exhaust Pipe Fasteners

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For vehicles with auxiliary heater, remove bolts (arrows) for exhaust pipe of auxiliary heater on sound insulation.

Fig 2: Identifying Quick-Release Fasteners And Noise Insulation

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Remove bolts or quick-release screws -1- and -2- and remove front sound insulation.
Place VAG1306 drip tray beneath engine.

Vehicles with drain plug

Fig 3: Identifying Drain Plug

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Turn radiator drain plug -2- counterclockwise. If needed, attach accessory hose to connection flange and drain coolant.

Vehicles without drain plug

Remove retaining clamp for Engine Coolant Temperature (ECT) sensor (on radiator) -G83-.
Remove Engine Coolant Temperature (ECT) sensor from outlet and drain coolant.

All

Fig 4: Disconnecting Coolant Hose At Oil Cooler

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In addition, disconnect coolant hose at oil cooler (arrow) and drain remaining coolant.